OC03 - Relay Out (PCA9554A)

Overview

OC03 is a low-voltage control relay module able to switch AC and DC loads.

The optically isolated relay is controlled by a PCA9554A IO expander, which provides an control interface to the switch. The PCA9554A has several selectable I²C addresses accessible via solder pads.

The TLP241A photorelay consist of a photo MOSFET optically coupled to an infrared light emitting diode which switches a AC or DC load. It provides an isolation voltage of 5000 Vrms, making it suitable for applications that require reinforced circuit insulation.

Product Highlights

• Low Voltage AC/DC Control Relay
• Load Voltage Range: 0 - 40 V
• Load Current Rating: 2 A

Specifications

PCA9554A

• 400-kHz Fast I²C Bus
• Three Hardware Address Pins Allow up to Eight I²C Addresses
• Internal Power-On Reset
• No Glitch on Power Up
• Latched Outputs With High-Current Drive

TLP240A

• Normally Open
• OFF-state output terminal voltage: 40 V (min)
• Trigger LED current: 3 mA (max)
• ON-state current: 2.0 A (max)
• ON-state resistance: 100 m Ω (max, t < 1 s) 150 m Ω (max, Continuous)
• Isolation voltage: 5000 Vrms (min)

Datasheet

PCA9554A Datasheet

TLP241A Datasheet